(74) باب بَيْعِ التَّمْرِ بِالتَّمْرِ
Narrated Ibn `Umar:
The Prophet (ﷺ) said, "The selling of wheat for wheat is Riba (usury) except if it is handed from hand to hand and equal in amount. Similarly the selling of barley for barley, is Riba except if it is from hand to hand and equal in amount, and dates for dates is usury except if it is from hand to hand and equal in amount. (See Riba-Fadl in the glossary).
Reference: Sahih al-Bukhari 2170
In-book reference: Book 34, Hadith 121
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 34, Hadith 379